Embossing machine



Aug. 31 1926.

. S- 1. BROWN msossme MACHINE Filed Oct. 24, 1925 2 Sheets-Sheet 1 HNVENTOR L,$M

A4; ATTORNEY Aug. 31 1926. A

I s. L 1,598,363

Filed Oct. 24,' 1925 \HHHHHHm I mnumm J 2/ 0 3 2/ 5,130 k/ E where artistic effects are desired.

Patented Aug. 31, 1926.

SYDNEY L. BROWN, OF BROOKLYN, NEW YORK.

EMBOSSING MACHTNE.

Application filed fleteber 24, 1925. #Serial No. 64,597.

This invention. relates to a machine or apparatus for embossing strips of soft metal or other suitable material. The invention has been made especially with the idea of providing a machine for ornamenting the outer or side surfaces of window bars, or cames, used for mounting the panes of leaded glass windows, and which are usually made of lead or other soft plastic metal. Lead cames are usually made by extruding metal through diesto form long rods H shaped in cross-section, the rods being cut into suitable lengths for handling. Such cames as extruded from the dies are not suitable for use An object of the present invention is to provide a machine wherebyan ornamental surface formation may be given to the sides of the came, and especially to produce cames having the form and appearance of hand wrought cames. An important feature of the inven tion is that the machine does not form the cames with a fixed repeated pattern.

In accordance with the invention, the sides of the came are shaped or embossed by means of pattern units each comprising a plurality of, usually two, pattern wheels mounted side by side so as to provide a peripheral embossing surface which presses against the side of the came as the Wheels roll against the came.

A full understanding of the invention can best be given by a detailed description of an approved embodiment of the features of the invention, and such a description will now be given in connection with the accompanying drawings illustrating such an embodiment, in which F 1 is a view of a machine for emboss ing cames of lead or the like showing the machine in elevation and showing in section a came in position in the machine;

Fig. 2 is a plan view of the machine;

Fig. 3 is a detail view on a larger scale showing in section one of the pattern units and part of the other pattern unit and parts of the feeding wheels;

Fig. 4 is a still further enlarged sectional detail view showing cooperating portions of the pattern units and feed wheels;

Fig. 5 is a similar view but sectioned with the pattern units turned to a different position to illustrate the difference in formation of different portions of the peripheral embossing faces of the pattern Wheels;

Fig. -6 is a view of as it comes from the extruding die; and

Fig. 7 is a view of one side of the cornpleted product of the machine.

Referring to the drawings, parts of the machine as shown are carried by two standards 10 and 11. Two feeding disks or wheels 12 and 13 are secured on horizontal driven shafts 14 and 15 respectively which are mounted in hearings on the standards 10 and 11. These shafts may be driven inany suitable manner. The feeding wheels in the machine shown are set one above the other in the same vertical plane. Their peripheries are spaced just sufliciently to receive between them, and to have a feeding grip on, the web of the came so as to feed the came horizontally between the wheels, and the wheels are of a thickness at and near their peripheries to fill the channels in the came and to serve as supports for the side walls of the came.

On each side of the path of the came as it is fed along by the wheels 12 and 18 there a short length of came the operative is mounted a pattern unit consisting of two independently rotatable pattern wheels 20 and .21 mounted side by side to roll against the side of the came as it is feeding wheels, each pattern wheel bearing on a portion of the came side. lVhen the feeding wheels are mounted as shown with their axes horizontal and in the same vertical plane, the pattern wheels of both units will be mounted with their axes extending vertically and in the same vertical plane and with thepattern wheels of each unit mounted one above the other. The two pattern wheels of each unit are desirably of the same diameter and mounted on a common shaft 22 carried by upper and lower boxes .23 and 24 which are mounted to slide horizontally in inwardly extending upper and lower extensions 25 and 26 of the standards 10 and 11. The boxes 23 and 24 are pressed inward by springs 27 to force the pattern wheels i-nward' toward the feeding wheels to bear with suitable pressure against the sides-of the came.

One of the pattern wheels, 20, is formed with an inwardly tapered lateral extension 30 of its peripheral surface, and the other wheel, 21, has a lateral flange 31 which extends over the lateral extension 30 and has an undulating edge, the inner face of the flange 31 being outwardly tapered and the moved by the I of the peripheries of the wheels en? .wheels will thereby be caused to V tively parts being formed and proportioned so that the flange 31 will lie over and close to but out of contactwith the outer surface of the flange 30. The pattern on the wheel 21 to be embossed on the came side should extend out to the edge of the'liange '31 and for a distance away from the edge of the flange at least equal to the width ot the portion oi the came side to be acted on by this wheel. The peripheral surface of tire extension 30 of the wheel 21 over which the flange 31 extends is left plain for a width equal to the overlap of the widestportion ot' the flange 31, and the pattern on the wheel 20 extends from this plain portion for a distance at least equal to the width of the portion of the came side to'be acted on by this'wheel.

lhe purpose of hating the pattern wheels of eachpattern unit independently rotatable is that they shallrotate at slightly dillerential peripheral speeds. This result is secured in the machine shown by hayi each wheel mounted to turn freely on the shaft .22 so that as dil'l'erent more or less raised po c ons e the side of the came or strip being eni relatively slightly varying rates. T he result of this is that the patterns on the t vo wheels of the unit will be constantly shitting relato each other, so that the pattern or configuration embossed on the came side will not be repeated on successive revolutions of:

the pattern wheels but will be constantly varied due to the slight shitting oi the pat- Z tern wheels relatively to each other. Usually'it will be best to depend on the variations in the peripheral suriaces oi the wheels to produce the desired dill'erential mo rement of the two wheels, .ach being'free to turn on the shaft, rather than to provide means for causing a controlled definite slight differential movement ot the independently rotatable wheels, or even to resort to a drag on one of the wheels. In either case, the wheels may be considered as indepei'idently rotatable.

By forming the two pattern wheels of a unit one with a tapered lateral extension and the other with a thin outwardly tapered llange to overlap such extension, the formation of a longitudinally extending rib on the came side such as would otherwise be formed in the space between the peripheries of the two pattern wheels is avoided, and the line or shoulder between the portions of the pattern formed by the two wheels is greatl minimized. And by forming the overlapping flange with an undulating edge the presence of a straight shoulder or line on the side of the came is avoided and such longitudinally extending shoulder as is formed is rendered less noticeable and less objectionable.

While itowill usually be desirable to make ani l it not ot the same diameter they would not be nieunted on a common shalt. The peripheries of the two wheels must, however, be in the same plane at the point of contact with the came or strip.

it will be understood that the term einbossing is used herein in a broad and general sense. Obviously, a machine by which distinct pattern in intaglio is formed on a canie or other strip might come within the invention as claimed.

W hat is claimed is:

1. in an apparatus "for embossing strip material, the combination of a pattern unit 001 iprisii a plurality of independently rotatable pattern wheels mounted side by side to present to the strip a peripheral embossingv surtace which is partly on each wheel, and means tor supporting the strip pressed against said embossing surface and for causa relative movement between the pattern unit and the strip, the wheels being to roll against the strip, and to rotate at dinerent rates, the axis of each wheel being perpendicular to the direction of such relative movement.

2. In an apparatus for embossing strip material, the combination of a pattern unit comprising a plurality of pattern wheels mounted side by side to present to the strip a peripheral em cssing surface which partly on each wheel, and means for supporting the strip pressed against said embossing surface and for causing a relative movement between the patternunit and the strip whereby the wheels are caused to roll against e strip and to rotate at slightly dillerent rates, each wheel being free to retate independently of the other or others, and the axis or each wheel being perpendicular to the direction of such relative movement.

3. In an apparatus for embossing strip material, the combination of a pattern unit comprising two independently rotatable pattern wheels mounted side by side to present to the strip a peripheral embossing surface which is partl' on each wheel, and means for supporting the strip pressed against said embossing surface and for causing a relative movement between the pattern unit and the strip whereby the wheels are caused to roll against the strip, one of said wheels having an inwardly tapered lateral extension of its peripheral surface and the other of said wheels having a lateral flange extending over said lateral extension.

a. In an apparatus for embossing strip material, the combination of a pattern unit comprising two independently rotatable pattern wheels mounted side by side to present Ill) to the strip a peripheral embossing surface which is partly on each wheel, and means for supporting the strip pressed against said emboasing surface and for causing a relative movement between the pattern unit and the strip whereby the wheels are caused to roll against the strip, one of said wheels having an inwardly tapered lateral extension of its peripheral surface and the other of said wheels having a lateral flange extending over said lateral extension and having an undulating edge.

5. In an apparatus for embossing strip material, the combination of a pattern unit comprising a plurality of pattern wheels mounted side by side to present to the strip a peripheral embossing surface which is partly on each wheel, each wheel being free to rotate independently of the other or others and said Wheels being of the same diameter and being mounted on a common shaft, and their embossing surfaces differing in form, and means for supporting the strip pressed against said embossing surface and for causing a relative movement between the pattern unit and the strip in a direction perpendicular to said shaft, whereby the wheels are caused to roll against the strip and because of difference in form of'their embossing surfaces are caused to rotate at slightly different rates.

6. Apparatus for embossing strip material, comprising supporting and feeding means for supporting the strip and for moving it longitudinally, and a pattern unit comprising two independently rotatable pattern wheels mounted side by side in position to press against the strip and to present to the strip a peripheral embossing surface which is partly on each wheel, the axis of each wheel being perpendicular to the direction of movement of the strip, said wheels being adapted to roll against the strip as the strip is moved by the supporting and feeding means and being caused to rotate at different rates.

7. Apparatus for embossing strip material, eom iirising a supporting and feeding wheel, and a pattern unit comprising a plurality of independently rotatable pattern wheels mounted side by side in position to press against the strip and to cooperate With the supporting and feeding wheel and to present to the strip a peripheral embossing surface partly on each Wheel as they roll against the strip, the axes of all said Wheels being parallel, and the pattern wheels being caused to rotate at differentrates.

8. A came embossing machine, comprising in combination a pair of feeding wheels adapted to engage the web of the came and to support a side thereof, and a pattern unit comprising two independently rotatable pattern Wheels mounted to press and roll against the outer face of the supported side of the came as the came is moved by the feeding wheels, each pattern wheel bearing on a part of the came side, the axes of all said wheels being parallel, and the pattern wheels being caused to rotate at different rates.

9. A came embossing machine, comprising in combination a pair of feeding wheels adapted to engage the web of the came and to support a side thereof, and a pattern unit comprising two independently rotatable pattern wheels mounted to roll against the outer face of the supported side of the came as the came is moved by the feeding wheels, each wheel bearing on a part of the came side, and one of the wheels having an inwardly tapered lateral extension of its peripheral surface and the other wheel having a lateral flange extending over said lateral extension and having an undulating edge.

10. A came embossing machine, comprising in combination a pair of feeding wheels adapted to engage the web of the came and to support the sides thereof, and two pattern units mounted on opposite sides of the path of the came, each pattern unit comprising two independently rotatable pattern wheels mounted to press and roll against the outer face of one of the came sides as the came is moved by the feeding wheels and at the place Where the came sides are supported by the feeding wheels, each pattern wheel bearing on a part of the came side, the axes of all said wheels being parallel, and the two wheels of each pattern unit being caused to rotate at different rates.

In testimony whereof I have hereunto set my hand.

SYDNEY L. BROWN. 

